For a healthy mother, you are, I believe, correct. There are, however, neurological conditions which make any pregnancy life-threatening for the mother. I know this because one of my wife’s friends suffers from one and was surgically sterilized to avoid the situation ever arising. While unlikely, a woman suffering from the same condition could learn of it and of the threat to her life in mid-pregnancy, leading to a circumstance like that of an ectopic pregnancy in which an abortion would arguably be justifiable homicide, rather than murder.
Plainly a partial-birth abortion can never be medically necessary for the sake of the life of the mother — if the mother’s life and health are not threatened by induced labor needed to kill the child by said procedure, then they would not be threatened by induced labor to deliver the child alive early.
The point of this article is that the treatment of ectopic pregnancy is not an abortion. The fertilized egg in that situation would never survive anyway.
Good point.